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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 26 hours after estrus begins






2. Look for infection - split - and rupture of the penis






3. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






4. Superior genes are _______ to multiply






5. Actual heat cycle (period)






6. 147 days






7. What makes the milk flow through the mammary glands?






8. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






9. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






10. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






11. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






12. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






13. When are dairy cattle dehorned?






14. (switzerland) 2nd in size and milk production - most muscle -






15. 26 hours after estrus begins






16. Days which have increasing daylight hours

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17. Sperm is produced here






18. (LH) stimulates the Leydig cells to produce testosterone






19. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






20. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






21. 19-23 (21) days






22. FEED






23. The more stressed out the male is - the less sperm he is going to produce






24. Luteolysis happens because of the ____________ hormone






25. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






26. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






27. Look for infection - split - and rupture of the penis






28. Provide nourishment for the developing sperm






29. 265-285 days






30. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






31. What makes the milk flow through the mammary glands?






32. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






33. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






34. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






35. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






36. (male) pushes the testes upward toward the body for warmth or protection






37. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






38. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






39. 45-60 days after breeding; re-breed as required






40. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






41. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






42. (male) pushes the testes outward toward the legs for a cool-down off of the body






43. 114 days






44. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






45. Prevent the cow from getting an infection from the calve






46. Animal which has been castrated after puberty






47. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






48. What about the sperm for a bull which has been castrated but still has testicles?






49. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






50. (male) pushes the testes upward toward the body for warmth or protection







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